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CAPE CANAVERAL, Fla. – The mobile launcher, or ML, makes steady progress on its 4.2-mile trek from Launch Pad 39B to the park site near the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. The Atlantic Ocean spans the view, in the background, behind Launch Pad 39A.
Data on the ML collected from structural and functional engineering tests during its two-week stay on the pad will be used in the next phases of construction. The 355-foot-tall ML structure, which took about two years to construct, will be modified by NASA’s 21st Century Ground Systems Program to support NASA’s Space Launch System, the heavy-lift rocket that will launch astronauts into deep space on future exploration missions. For more information, visit http://www.nasa.gov/exploration/systems/sls. Photo credit: NASA/Cory Huston